Investment in TowerJazz Semiconductor Ltd.	9 Months Ended
Sep. 29, 2013
Investments, Debt and Equity Securities [Abstract]
Investment in TowerJazz Semiconductor Ltd.	Investment in TowerJazz Semiconductor Ltd. During the second quarter of fiscal year 2013, the Company sold its remaining 42,970 TowerJazz ordinary shares. This sale resulted in a gain of $181,000.

The entire disclosure for investments in certain debt and equity securities.

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